1
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Wu P, Li Y, Yang A, Tan X, Chu J, Zhang Y, Yan Y, Tang J, Yuan H, Zhang X, Xiao S. Advances in 2D Materials Based Gas Sensors for Industrial Machine Olfactory Applications. ACS Sens 2024; 9:2728-2776. [PMID: 38828988 DOI: 10.1021/acssensors.4c00431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
The escalating development and improvement of gas sensing ability in industrial equipment, or "machine olfactory", propels the evolution of gas sensors toward enhanced sensitivity, selectivity, stability, power efficiency, cost-effectiveness, and longevity. Two-dimensional (2D) materials, distinguished by their atomic-thin profile, expansive specific surface area, remarkable mechanical strength, and surface tunability, hold significant potential for addressing the intricate challenges in gas sensing. However, a comprehensive review of 2D materials-based gas sensors for specific industrial applications is absent. This review delves into the recent advances in this field and highlights the potential applications in industrial machine olfaction. The main content encompasses industrial scenario characteristics, fundamental classification, enhancement methods, underlying mechanisms, and diverse gas sensing applications. Additionally, the challenges associated with transitioning 2D material gas sensors from laboratory development to industrialization and commercialization are addressed, and future-looking viewpoints on the evolution of next-generation intelligent gas sensory systems in the industrial sector are prospected.
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Affiliation(s)
- Peng Wu
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Yi Li
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Aijun Yang
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong, No 28 XianNing West Road, Xi'an, Shanxi 710049, China
| | - Xiangyu Tan
- Electric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming, Yunnan 650217, China
| | - Jifeng Chu
- State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong, No 28 XianNing West Road, Xi'an, Shanxi 710049, China
| | - Yifan Zhang
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Yongxu Yan
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Ju Tang
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
| | - Hongye Yuan
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, Shanxi 710049, China
| | - Xiaoxing Zhang
- Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan, Hubei 430068, China
| | - Song Xiao
- State Key Laboratory of Power Grid Environmental Protection, School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430072, China
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2
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Yang Y, Zong B, Xu Q, Li Q, Li Z, Mao S. Discriminative Analysis of NO x Gases by Two-Dimensional Violet Phosphorus Field-Effect Transistors. Anal Chem 2023. [PMID: 38019807 DOI: 10.1021/acs.analchem.3c02894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Two-dimensional violet phosphorus (VP) has emerged as a new sensing material in various sensing applications due to its unique electrical properties and high stability among allotropes of phosphorus. Currently, the research of the VP-based analysis method is at the early stage. In this work, a VP nanosheet-based field-effect transistor (FET) sensor is reported for the detection of NO2 and N2O gases with extraordinary sensing performance. This sensor can achieve excellent sensitivity of up to ∼50% current change/ppm and a low detection limit of 5.9 ppb and enables the NO2 analysis in various mixed gases. Moreover, this sensor can effectively distinguish between NO2 and N2O gases, which is a big challenge for current FET or chemiresistor gas sensors. The different sensing behaviors of the VP sensor to NO2 and N2O gases have been investigated, and the mechanism study shows that the adsorption energy, bond length of the gas molecule on the VP surface, and the decomposition of N2O led to the differential responses. This work is one of the pioneer studies of VP gas sensors and presents a new sensing method for the discriminative analysis of NO2 and N2O for greenhouse gas emission monitoring and air quality control.
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Affiliation(s)
- Yuehong Yang
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Boyang Zong
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Qikun Xu
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Qiuju Li
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Zhuo Li
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Shun Mao
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
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3
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Kumar A, Sanger A, Kang SB, Chandra R. Interface Engineering-Driven Room-Temperature Ultralow Gas Sensors with Elucidating Sensing Performance of Heterostructure Transition Metal Dichalcogenide Thin Films. ACS Sens 2023; 8:3824-3835. [PMID: 37769211 DOI: 10.1021/acssensors.3c01290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
In this report, we investigate the room-temperature gas sensing performance of heterostructure transition metal dichalcogenide (MoSe2/MoS2, WS2/MoS2, and WSe2/MoS2) thin films grown over a silicon substrate using a pulse laser deposition technique. The sensing response of the aforementioned sensors to a low concentration range of NO2, NH3, H2, CO, and H2S gases in air has been assessed at room temperature. The obtained results reveal that the heterojunctions of metal dichalcogenide show a drastic change in gas sensing performance compared to the monolayer thin films at room temperature. Nevertheless, the WSe2/MoS2-based sensor was found to have an excellent selectivity toward NO2 gas with a particularly high sensitivity of 10 ppb. The sensing behavior is explained on the basis of a change in electrical resistance as well as carrier localization prospects. Favorably, by developing a heterojunction of diselenide and disulfide nanomaterials, one may find a simple way of improving the sensing capabilities of gas sensors at room temperature.
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Affiliation(s)
- Ashwani Kumar
- Nanoscience Laboratory, Institute Instrumentation Centre, IIT Roorkee, Roorkee 247667, India
- Department of Physics, Graphic Era (Deemed to be University), Dehradun, Uttarakhand 248002, India
| | - Amit Sanger
- Department of Physics, Netaji Subhas University of Technology, Dwarka Sector-3, New Delhi 110078, India
| | - Sung Bum Kang
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Ramesh Chandra
- Nanoscience Laboratory, Institute Instrumentation Centre, IIT Roorkee, Roorkee 247667, India
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4
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Balan B, Xavier MM, Mathew S. MoS 2-Based Nanocomposites for Photocatalytic Hydrogen Evolution and Carbon Dioxide Reduction. ACS OMEGA 2023; 8:25649-25673. [PMID: 37521597 PMCID: PMC10373465 DOI: 10.1021/acsomega.3c02084] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023]
Abstract
Photocatalysis is a facile and sustainable approach for energy conversion and environmental remediation by generating solar fuels from water splitting. Due to their two-dimensional (2D) layered structure and excellent physicochemical properties, molybdenum disulfide (MoS2) has been effectively utilized in photocatalytic H2 evolution reaction (HER) and CO2 reduction. The photocatalytic efficiency of MoS2 greatly depends on the active edge sites present in their layered structure. Modifications like reducing the layer numbers, creating defective structures, and adopting different morphologies produce more unsaturated S atoms as active edge sites. Hence, MoS2 acts as a cocatalyst in nanocomposites/heterojunctions to facilitate the photogenerated electron transfer. This review highlights the role of MoS2 as a cocatalyst for nanocomposites in H2 evolution reaction and CO2 reduction. The H2 evolution activity has been described comprehensively as binary (with metal oxide, carbonaceous materials, metal sulfides, and metal-organic frameworks) and ternary composites of MoS2. Photocatalytic CO2 reduction is a more complex and challenging process that demands an efficient light-responsive semiconductor catalyst to tackle the thermodynamic and kinetic factors. Photocatalytic reduction of CO2 using MoS2 is an emerging topic and would be a cost-effective substitute for noble catalysts. Herein, we also exclusively envisioned the possibility of layered MoS2 and its composites in this area. This review is expected to furnish an understanding of the diverse roles of MoS2 in solar fuel generation, thus endorsing an interest in utilizing this unique layered structure to create nanostructures for future energy applications.
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Affiliation(s)
- Bhagyalakshmi Balan
- School
of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala 686 560, India
| | - Marilyn Mary Xavier
- School
of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala 686 560, India
| | - Suresh Mathew
- School
of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala 686 560, India
- Advanced
Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University, Kottayam, Kerala 686 560, India
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Wang L, Xu F, Zhang C, Wageh S, Al-Hartomy OA, Zhang B, Yang T, Zhang H. Chemiresistive gas sensor based on Mo 0.5W 0.5S 2 alloy nanoparticles with good selectivity and ppb-level limit of detection to ammonia. Mikrochim Acta 2023; 190:283. [PMID: 37415040 DOI: 10.1007/s00604-023-05843-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/18/2023] [Indexed: 07/08/2023]
Abstract
Transition metal dichalcogenides (TMDs) are promising materials for chemiresistive gas sensor, while TMD alloys (two chalcogenide or/and metal elements) with tunable electronic structures have drawn little attention in gas sensing. Herein, Mo0.5W0.5S2 alloy nanoparticles (NPs) were prepared by a facile sonication exfoliation method and then tested for ammonia sensing. The crystal structure, geometric morphology, and elemental composition of Mo0.5W0.5S2 NPs were investigated. The gas sensing measurements demonstrated Mo0.5W0.5S2 NPs with good response to ammonia at 80 °C with a limit of detection down to 500 part per billion (ppb). The sensor also displayed good stability as well as superb selectivity to ammonia in the presence of interferences, such as methanol, acetone, benzene, and cyclohexane. The theoretical calculations revealed Mo and W atoms at edges (such as Mo0.5W0.5S2 (010)) of sheet-like NPs as the active sites for ammonia adsorption. Electrons donated by the adsorbed ammonia were combined with holes in p-type Mo0.5W0.5S2 NPs, and the concentration of the main charge carrier was reduced, resulting in resistance enhancement.
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Affiliation(s)
- Lude Wang
- School of Artificial Intelligence and Information Technology, Nanjing University of Chinese Medicine, No. 138 Xianling Rd, Nanjing, 210023, China
- School of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Feicui Xu
- School of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Chen Zhang
- School of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Swelm Wageh
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Omar A Al-Hartomy
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Bin Zhang
- Otolaryngology Department and Biobank of the First Affiliated Hospital, Shenzhen Second People's Hospital, Health Science Center, Shenzhen University, Shenzhen, 518060, People's Republic of China.
| | - Tingqiang Yang
- School of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China.
| | - Han Zhang
- School of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
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Synergistic coupling of 0D–2D heterostructure from ZnO and Ti3C2T MXene-derived TiO2 for boosted NO2 detection at room temperature. NANO MATERIALS SCIENCE 2023. [DOI: 10.1016/j.nanoms.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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7
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Alagh A, Annanouch FE, Sierra-Castillo A, Haye E, Colomer JF, Llobet E. Three-Dimensional Assemblies of Edge-Enriched WSe 2 Nanoflowers for Selectively Detecting Ammonia or Nitrogen Dioxide. ACS APPLIED MATERIALS & INTERFACES 2022; 14:54946-54960. [PMID: 36469520 PMCID: PMC9756288 DOI: 10.1021/acsami.2c16299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Herein, we present, for the first time, a chemoresistive-type gas sensor composed of two-dimensional WSe2, fabricated by a simple selenization of tungsten trioxide (WO3) nanowires at atmospheric pressure. The morphological, structural, and chemical composition investigation shows the growth of vertically oriented three-dimensional (3D) assemblies of edge-enriched WSe2 nanoplatelets arrayed in a nanoflower shape. The gas sensing properties of flowered nanoplatelets (2H-WSe2) are investigated thoroughly toward specific gases (NH3 and NO2) at different operating temperatures. The integration of 3D WSe2 with unique structural arrangements resulted in exceptional gas sensing characteristics with dual selectivity toward NH3 and NO2 gases. Selectivity can be tuned by selecting its operating temperature (150 °C for NH3 and 100 °C for NO2). For instance, the sensor has shown stable and reproducible responses (24.5%) toward 40 ppm NH3 vapor detection with an experimental LoD < 2 ppm at moderate temperatures. The gas detecting capabilities for CO, H2, C6H6, and NO2 were also investigated to better comprehend the selectivity of the nanoflower sensor. Sensors showed repeatable responses with high sensitivity to NO2 molecules at a substantially lower operating temperature (100 °C) (even at room temperature) and LoD < 0.1 ppm. However, the gas sensing properties reveal high selectivity toward NH3 gas at moderate operating temperatures. Moreover, the sensor demonstrated high resilience against ambient humidity (Rh = 50%), demonstrating its remarkable stability toward NH3 gas detection. Considering the detection of NO2 in a humid ambient atmosphere, there was a modest increase in the sensor response (5.5%). Furthermore, four-month long-term stability assessments were also taken toward NH3 gas detection, and sensors showed excellent response stability. Therefore, this study highlights the practical application of the 2H variant of WSe2 nanoflower gas sensors for NH3 vapor detection.
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Affiliation(s)
- Aanchal Alagh
- Department
d’Enginyeria Electronica, Universitat
Rovira I Virgili, Avenida Paisos Catalans 26, 43007Tarragona, Spain
| | - Fatima Ezahra Annanouch
- Department
d’Enginyeria Electronica, Universitat
Rovira I Virgili, Avenida Paisos Catalans 26, 43007Tarragona, Spain
| | - Ayrton Sierra-Castillo
- Laboratoire
de Physique du Solide (LPS), Namur Institute
of Structured Matter (NISM), University of Namur, Rue de Bruxelles, 61, 500Namur, Belgium
| | - Emile Haye
- Laboratoire
d’Analyse par Réactions Nucléaires (LARN), Namur Institute of Structured Matter (NISM), Université
de Namur, Rue de Bruxelles
61, 5000Namur, Belgium
| | - Jean-François Colomer
- Laboratoire
de Physique du Solide (LPS), Namur Institute
of Structured Matter (NISM), University of Namur, Rue de Bruxelles, 61, 500Namur, Belgium
| | - Eduard Llobet
- Department
d’Enginyeria Electronica, Universitat
Rovira I Virgili, Avenida Paisos Catalans 26, 43007Tarragona, Spain
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8
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Song L, Ahn J, Xu L, Baek JW, Shin E, Kim ID. Facile Synthesis of Co 3O 4/CoMoO 4 Heterostructure Nanosheets for Enhanced Acetone Detection. ACS Sens 2022; 7:3540-3550. [DOI: 10.1021/acssensors.2c01969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Lu Song
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Dehak-ro, Yuseong-gu, Daejeon34141, Republic of Korea
| | - Jaewan Ahn
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Dehak-ro, Yuseong-gu, Daejeon34141, Republic of Korea
| | - Liangliang Xu
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Dehak-ro, Yuseong-gu, Daejeon34141, Republic of Korea
| | - Jong Won Baek
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Dehak-ro, Yuseong-gu, Daejeon34141, Republic of Korea
| | - Euichul Shin
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Dehak-ro, Yuseong-gu, Daejeon34141, Republic of Korea
| | - Il-Doo Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Dehak-ro, Yuseong-gu, Daejeon34141, Republic of Korea
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Xu X, Wang S, Chen Y, Liu W, Wang X, Jiang H, Ma S, Yun P. CsPbBr 3-Based Nanostructures for Room-Temperature Sensing of Volatile Organic Compounds. ACS APPLIED MATERIALS & INTERFACES 2022; 14:39524-39534. [PMID: 35976102 DOI: 10.1021/acsami.2c09586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
All-inorganic halide perovskites, as a dominant member of the perovskite family, have been proven to be excellent semiconductors due to the great successes for solar cells, light-emitting diodes, photodetectors, and nanocrystal photocatalysts. Despite the remarkable advances in those fields, there are few research studies focusing on gas and humidity-sensing performances, especially for pure CsPbBr3 and heterogeneous CsPbBr3@MoS2 composites. Here, we first report a valuable CsPbBr3 sensor prepared by electrospinning, and the excellent gas sensing performances are investigated. The CsPbBr3 sensor can quickly and effectively detect ethanolamine at room temperature. The response time is only 16 s, and the response to 100 ppm ethanolamine is as high as 29.87, besides the excellent repeatability and good stability. The theoretical detection limit is estimated to be 21 ppb. Furthermore, considering the irreplaceable role of heterostructures in regulating the electronic structure and supporting rich reaction boundaries, we also actively explored the EA sensitivity of inorganic CsPbBr3-based heterogeneous composites CsPbBr3@MoS2. At the same time, the roles of the critical capping agents OA and OAm are systematically investigated. This work demonstrates the great potential of all-inorganic halide perovskites in promising volatile organic compound detection.
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Affiliation(s)
- Xiaoli Xu
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Shengyi Wang
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Yan Chen
- Northwest University for Nationalities, Lanzhou, Gansu 730030, China
| | - Wangwang Liu
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Xiaoping Wang
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Hongtao Jiang
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Shuyi Ma
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Pengdou Yun
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
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10
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Yang Y, Gong W, Li X, Liu Y, Liang Y, Chen B, Yang Y, Luo X, Xu K, Yuan C. Light-assisted room temperature gas sensing performance and mechanism of direct Z-scheme MoS 2/SnO 2 crystal faceted heterojunctions. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129246. [PMID: 35739765 DOI: 10.1016/j.jhazmat.2022.129246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/12/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
Light assistance and construction of heterojunctions are both promising means to improve the room temperature gas sensing performance of MoS2 recently. However, enhancing the separation efficiency of photo-generated carriers at interface and adsorption ability of surface have become the bottleneck problem to further improve the room temperature gas sensing performance of MoS2-based heterojunctions under light assistance. In the present study, a novel direct Z-scheme MoS2/SnO2 heterojunction was designed through crystal facets engineering and its room temperature gas sensing properties under light assistance was studied. It was found that the heterojunction showed outstanding room temperature NO2 sensing performance with a high response of 208.66 toward 10 ppm NO2, together with excellent recovery characteristics and selectivity. The gas sensing mechanism study suggested that high-energy {221} crystal facets of SnO2 and MoS2 directly formed Z-scheme heterojunction, which could greatly improve the separation efficiency of photo-generated carriers with high redox capacity. Moreover, {221} facets greatly enhanced adsorption ability towards NO2. This work not only opens up the application of Z-scheme heterojunctions in gas sensing, which will greatly promotes the development of room temperature light-assisted gas sensors, but also provides a new idea for the construction of direct Z-scheme heterojunctions through crystal facets engineering.
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Affiliation(s)
- Yong Yang
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330098, Jiangxi, PR China.
| | - Wufei Gong
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330098, Jiangxi, PR China
| | - Xin Li
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330098, Jiangxi, PR China
| | - Yuan Liu
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330098, Jiangxi, PR China
| | - Yan Liang
- Department of Artificial Intelligence, Jiangxi University of Technology, Nanchang 330022, Jiangxi, PR China
| | - Bin Chen
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, PR China; Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, PR China
| | - Yanxing Yang
- Department of Physics, New Jersey Institute of Technology, Newark, NJ 07102-1982, USA
| | - Xingfang Luo
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330098, Jiangxi, PR China
| | - Keng Xu
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330098, Jiangxi, PR China
| | - Cailei Yuan
- Jiangxi Key Laboratory of Nanomaterials and Sensors, Jiangxi Key Laboratory of Photoelectronics and Telecommunication, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang 330098, Jiangxi, PR China
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11
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Zhang Y, Jiang Y, Duan Z, Wu Y, Zhao Q, Liu B, Huang Q, Yuan Z, Li X, Tai H. Edge-enriched MoS 2 nanosheets modified porous nanosheet-assembled hierarchical In 2O 3 microflowers for room temperature detection of NO 2 with ultrahigh sensitivity and selectivity. JOURNAL OF HAZARDOUS MATERIALS 2022; 434:128836. [PMID: 35421674 DOI: 10.1016/j.jhazmat.2022.128836] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/27/2022] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
Nitrogen dioxide (NO2) is one of the most hazardous toxic pollutants to human health and the environment. However, deficiencies of low sensitivity and poor selectivity at room temperature (RT) restrain the application of NO2 sensors. Herein, the edge-enriched MoS2 nanosheets modified porous nanosheets-assembled three-dimensional (3D) In2O3 microflowers have been synthesized to improve the sensitivity and selectivity of NO2 detection at RT. The results show that the In2O3/MoS2 composite sensor exhibits a response as high as 343.09-5 ppm NO2, which is 309 and 72.5 times higher than the sensors based on the pristine MoS2 and In2O3. The composite sensor also shows short recovery time (37 s), excellent repeatability and long-term stability. Furthermore, the response of the In2O3/MoS2 sensor to NO2 is at least 30 times higher than that of other gases, proving the ultrahigh selectivity of the sensor. The outstanding sensing performance of the In2O3/MoS2 sensor can be attributed to the synergistic effect and abundant active sites originating from the p-n heterojunction, exposed edge structures and the designed 2D/3D hybrid structure. The strategy proposed herein is expected to provide a useful reference for the development of high-performance RT NO2 sensors.
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Affiliation(s)
- Yajie Zhang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Yadong Jiang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Zaihua Duan
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Yingwei Wu
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Qiuni Zhao
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Bohao Liu
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Qi Huang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Zhen Yuan
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China
| | - Xian Li
- Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China.
| | - Huiling Tai
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China.
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12
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Yang L, Ji H, Meng C, Li Y, Zheng G, Chen X, Niu G, Yan J, Xue Y, Guo S, Cheng H. Intrinsically Breathable and Flexible NO 2 Gas Sensors Produced by Laser Direct Writing of Self-Assembled Block Copolymers. ACS APPLIED MATERIALS & INTERFACES 2022; 14:17818-17825. [PMID: 35394746 DOI: 10.1021/acsami.2c02061] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The surge in air pollution and respiratory diseases across the globe has spurred significant interest in the development of flexible gas sensors prepared by low-cost and scalable fabrication methods. However, the limited breathability in the commonly used substrate materials reduces the exchange of air and moisture to result in irritation and a low level of comfort. This study presents the design and demonstration of a breathable, flexible, and highly sensitive NO2 gas sensor based on the silver (Ag)-decorated laser-induced graphene (LIG) foam. The scalable laser direct writing transforms the self-assembled block copolymer and resin mixture with different mass ratios into highly porous LIG with varying pore sizes. Decoration of Ag nanoparticles on the porous LIG further increases the specific surface area and conductivity to result in a highly sensitive and selective composite to detect nitrogen oxides. The as-fabricated Ag/LIG gas sensor on a flexible polyethylene substrate exhibits a large response of -12‰, a fast response/recovery of 40/291 s, and a low detection limit of a few parts per billion at room temperature. Integrating the Ag/LIG composite on diverse fabric substrates further results in breathable gas sensors and intelligent clothing, which allows permeation of air and moisture to provide long-term practical use with an improved level of comfort.
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Affiliation(s)
- Li Yang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Huadong Ji
- School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Chuizhou Meng
- School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Yuhang Li
- Institute of Solid Mechanics, Beihang University (BUAA), Beijing 100191, China
| | - Guanghao Zheng
- School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Xue Chen
- School of Electrical Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Guangyu Niu
- School of Architecture and Art Design, Hebei University of Technology, Tianjin 300130, China
| | - Jiayi Yan
- School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Ye Xue
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Shijie Guo
- School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Huanyu Cheng
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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13
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Sun Q, Li Y, Hao J, Zheng S, Zhang T, Wang T, Wu R, Fang H, Wang Y. Increased Active Sites and Charge Transfer in the SnS 2/TiO 2 Heterostructure for Visible-Light-Assisted NO 2 Sensing. ACS APPLIED MATERIALS & INTERFACES 2021; 13:54152-54161. [PMID: 34734688 DOI: 10.1021/acsami.1c16095] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Tin disulfide (SnS2) has been extensively researched as a promising sensing material due to its large electronegativity, suitable band gap, earth abundance, and nontoxicity. However, the poor conductivity and slow response/recovery speed at room temperature greatly hinder its application in high-performance practical gas sensors. Herein, to promote the study of SnS2-based gas sensors, a hierarchical SnS2/TiO2 heterostructure was synthesized and used as a sensing material to detect NO2 with the help of light illumination. Through the synergistic effect of the SnS2/TiO2 heterostructure and 525 nm light activation, the NO2 sensor based on the SnS2/TiO2 heterostructure exhibited a high response factor of 526% toward 1 ppm NO2 and a short response/recovery time of 43/102 s at room temperature due to the enhanced charge transfer and increased adsorption sites, which was superior to the vast majority of other NO2 sensors. An obvious decrease in the surface-adsorbed oxygen content based on the X-ray photoelectron spectroscopy measurement further confirmed that light illumination was helpful to clear the surface of SnS2/TiO2 and thus increased active sites for NO2 sensing. In addition, a flexible SnS2/TiO2 sensor was also fabricated to confirm its potential application in portable and wearable devices.
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Affiliation(s)
- Quan Sun
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Yanqiu Li
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Juanyuan Hao
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
- Key Laboratory of Micro-Systems and Micro-Structures Manufacturing, Ministry of Education, Harbin 150001, P. R. China
| | - Shengliang Zheng
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Tianyue Zhang
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Tingting Wang
- School of Chemical Engineering and Chemistry, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Ruozhen Wu
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Haitao Fang
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - You Wang
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
- Key Laboratory of Micro-Systems and Micro-Structures Manufacturing, Ministry of Education, Harbin 150001, P. R. China
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14
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Zulkefli A, Mukherjee B, Sahara R, Hayakawa R, Iwasaki T, Wakayama Y, Nakaharai S. Enhanced Selectivity in Volatile Organic Compound Gas Sensors Based on ReS 2-FETs under Light-Assisted and Gate-Bias Tunable Operation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:43030-43038. [PMID: 34463490 DOI: 10.1021/acsami.1c10054] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Using a single-device two-dimensional (2D) rhenium disulfide (ReS2) field-effect transistor (FET) with enhanced gas species selectivity by light illumination, we reported a selective and sensitive detection of volatile organic compound (VOC) gases. 2D materials have the advantage of a high surface-area-to-volume ratio for high sensitivity to molecules attached to the surface and tunable carrier concentration through field-effect control from the back-gate of the channel, while keeping the top surface open to the air for chemical sensing. In addition to these advantages, ReS2 has a direct band gap also in multilayer cases, which sets it apart from other transition-metal dichalcogenides (TMDCs). We take advantage of the effective response of ReS2 to light illumination to improve the selectivity and gas-sensing efficiency of a ReS2-FET device. We found that light illumination modulates the drain current response in a ReS2-FET to adsorbed molecules, and the sensing activity differs depending on the gas species used, such as acetone, ethanol, and methanol. Furthermore, wavelength and carrier density rely on certain variations in light-modulated sensing behaviors for each chemical. The device will distinguish the gas concentration in a mixture of VOCs using the differences induced by light illumination, enhancing the selectivity of the sensor device. Our results shed new light on the sensing technologies for realizing a large-scale sensor network in the Internet-of-Things era.
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Affiliation(s)
- Amir Zulkefli
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Bablu Mukherjee
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Ryoji Sahara
- Research Center for Structural Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Ryoma Hayakawa
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takuya Iwasaki
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yutaka Wakayama
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Shu Nakaharai
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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15
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Xia Y, He S, Wang J, Zhou L, Wang J, Komarneni S. MXene/WS 2 hybrids for visible-light-activated NO 2 sensing at room temperature. Chem Commun (Camb) 2021; 57:9136-9139. [PMID: 34498643 DOI: 10.1039/d1cc03474j] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Optoelectronic gas sensors based on two-dimensional (2D) materials are touted as potential candidates for NO2 sensing at room temperature. However, most of the developed optoelectronic sensors to date are confined to the ultraviolet region with unsatisfactory performance. Herein, a room-temperature visible-light-activated optoelectronic NO2 sensor based on 2D/2D T3C2Tx/WS2 nanocomposites is presented. The T3C2Tx/WS2-based gas sensor exhibited fast response/recovery rate, full reversibility, long stability, good selectivity, and low detection limit (10 ppb). In addition to the efficient interfacial charge separation provided by 2D/2D heterostructures, the improvement of optoelectronic NO2 sensing performance was attributed to the visible-light-activation effects. This study provides a promising method to fabricate room-temperature high-performance gas sensors based on 2D nanomaterials.
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Affiliation(s)
- Yi Xia
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, and Analytic & Testing Research Center of Yunnan, Kunming 650093, China.,The Key Laboratory of Unconventional Metallurgy, Ministry of Education, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Sufang He
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, and Analytic & Testing Research Center of Yunnan, Kunming 650093, China
| | - Junming Wang
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, and Analytic & Testing Research Center of Yunnan, Kunming 650093, China
| | - Liexing Zhou
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, and Analytic & Testing Research Center of Yunnan, Kunming 650093, China
| | - Jing Wang
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Sridhar Komarneni
- Department of Ecosystem Science and Management and Materials Research Institute, 204 Energy and the Environment Laboratory, The Pennsylvania State University, University Park, PA 16802, USA.
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16
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Ding Y, Guo X, Kuang D, Hu X, Zhou Y, He Y, Zang Z. Hollow Cu 2O nanospheres loaded with MoS 2/reduced graphene oxide nanosheets for ppb-level NO 2 detection at room temperature. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126218. [PMID: 34492975 DOI: 10.1016/j.jhazmat.2021.126218] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/21/2021] [Accepted: 05/22/2021] [Indexed: 06/13/2023]
Abstract
Low energy consumption, high sensing response and high selectivity are the important indexes of metal oxide semiconductor (MOS) gas sensors applied in many application fields. However, the high working temperature and poor selectivity of MOS sensors severely restrict their scope of application in the Internet of Things (IoT). Herein, ternary MoS2-rGO-Cu2O (MG-Cu) composites with boosting ppb-level NO2 sensing characteristics are synthesized by combining hydrothermal method and soft-template method. The optimal proportion of MoS2, rGO and Cu2O is systematically explored. The SEM and TEM analyses confirm the hollow Cu2O is anchored on the surface of MG. The gas sensing tests illustrate that optimum composite sensor exhibits highest response to 500 ppb NO2 at room temperature, which is 11 and 5 times higher compared to pure MoS2 and binary MG15, respectively. Besides, it displays excellent selectivity and superior stability. The synergy of shell-structure with abundant mesoporous, heterojunction construction and enhanced conductivity lead to the enhanced sensing performance of ternary sensor.
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Affiliation(s)
- Yanqiao Ding
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education), Chongqing University, Chongqing 400044, China
| | - Xuezheng Guo
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education), Chongqing University, Chongqing 400044, China
| | - Delin Kuang
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education), Chongqing University, Chongqing 400044, China
| | - Xiaofei Hu
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education), Chongqing University, Chongqing 400044, China
| | - Yong Zhou
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education), Chongqing University, Chongqing 400044, China.
| | - Yong He
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education), Chongqing University, Chongqing 400044, China.
| | - Zhigang Zang
- Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education), Chongqing University, Chongqing 400044, China.
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17
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Dhara S, Jawa H, Ghosh S, Varghese A, Karmakar D, Lodha S. All-Electrical High-Sensitivity, Low-Power Dual-Mode Gas Sensing and Recovery with a WSe 2/MoS 2 pn Heterodiode. ACS APPLIED MATERIALS & INTERFACES 2021; 13:30785-30796. [PMID: 34180230 DOI: 10.1021/acsami.1c01806] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Two-dimensional MoS2 gas sensors have conventionally relied on a change in field-effect-transistor (FET) channel resistance or in the Schottky contact/pn homojunction barrier. We demonstrate an enhancement in sensitivity (6×) and dynamic response along with a reduction in detection limit (8×) and power (104×) in a gate-tunable type-II WSe2(p)/MoS2(n) heterodiode gas sensor over an MoS2 FET on the same flake. Measurements for varying NO2 concentration, gate bias, and MoS2 flake thickness, reinforced with first-principles calculations, indicate dual-mode operation due to (i) a series resistance-based exponential change in the high-bias thermionic current (high sensitivity), and (ii) a heterointerface carrier concentration-based linear change in near-zero-bias interlayer recombination current (low power) resulting in sub-100 μW/cm2 power consumption. Fast and gate-bias tunable recovery enables an all-electrical, room-temperature dynamic operation. Coupled with the sensing of trinitrotoluene (TNT) molecules down to 80 ppb, this study highlights the potential of the WSe2/MoS2 pn heterojunction as a simple, low-overhead, and versatile chemical-sensing platform.
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Affiliation(s)
- Sushovan Dhara
- Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Himani Jawa
- Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Sayantan Ghosh
- Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Abin Varghese
- Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India
- Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia
- IITB-Monash Research Academy, IIT Bombay, Mumbai 400076, India
| | | | - Saurabh Lodha
- Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India
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18
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Yu C, He J, Cheng X, Lin H, Yu H, Lu J. An Ion‐In‐Conjugation‐Boosted Organic Semiconductor Gas Sensor Operating at High Temperature and Immune to Moisture. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chuang Yu
- College of Chemistry, Chemical Engineering and Materials Science Collaborative Innovation Centre of Suzhou Nano Science and Technology National United Engineering Laboratory of, Functionalized Environmental Adsorption Materials Soochow University Suzhou 215123 P. R. China
| | - Jing‐Hui He
- College of Chemistry, Chemical Engineering and Materials Science Collaborative Innovation Centre of Suzhou Nano Science and Technology National United Engineering Laboratory of, Functionalized Environmental Adsorption Materials Soochow University Suzhou 215123 P. R. China
| | - Xue‐Feng Cheng
- College of Chemistry, Chemical Engineering and Materials Science Collaborative Innovation Centre of Suzhou Nano Science and Technology National United Engineering Laboratory of, Functionalized Environmental Adsorption Materials Soochow University Suzhou 215123 P. R. China
| | - Hong‐Zhen Lin
- Department i-LAB Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO) Chinese Academy of Sciences Suzhou 215123 P. R. China
| | - Haitao Yu
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences 865 Changning Road Shanghai 200050 China
| | - Jian‐Mei Lu
- College of Chemistry, Chemical Engineering and Materials Science Collaborative Innovation Centre of Suzhou Nano Science and Technology National United Engineering Laboratory of, Functionalized Environmental Adsorption Materials Soochow University Suzhou 215123 P. R. China
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19
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Yu C, He JH, Cheng XF, Lin HZ, Yu H, Lu JM. An Ion-In-Conjugation-Boosted Organic Semiconductor Gas Sensor Operating at High Temperature and Immune to Moisture. Angew Chem Int Ed Engl 2021; 60:15328-15334. [PMID: 33885188 DOI: 10.1002/anie.202104721] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Indexed: 11/06/2022]
Abstract
Organic electrical gas sensors have been developed for many decades because of their high sensitivity and selectivity. However, their industrialization is severely hindered by their intrinsic humidity susceptibility and poor recovery. Conventional organic sensory materials can only operate at room temperature owing to their weak intermolecular interactions. Herein, we demonstrate using a croconate polymer (poly-4,4'-biphenylcroconate) that the "ion-in-conjugation" concept enables organic gas sensors to operate at 100 °C and 70 % relative humidity with almost complete recovery. The fabricated sensor had a parts-per-billion (ppb) detection limit for NO2 and showed the highest sensitivity (2526 ppm-1 at 40 ppb) of all reported NO2 chemiresistive sensors. Furthermore, charge transfer increased with temperature. Theoretical calculations and in situ FTIR spectra confirmed the ion-in-conjugation-inspired hydrogen bond as key for excellent sensitivity. A NO2 alarm system was assembled to demonstrate the feasibility of this sensor.
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Affiliation(s)
- Chuang Yu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Centre of Suzhou Nano Science and Technology, National United Engineering Laboratory of, Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Jing-Hui He
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Centre of Suzhou Nano Science and Technology, National United Engineering Laboratory of, Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Xue-Feng Cheng
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Centre of Suzhou Nano Science and Technology, National United Engineering Laboratory of, Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
| | - Hong-Zhen Lin
- Department i-LAB, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, P. R. China
| | - Haitao Yu
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai, 200050, China
| | - Jian-Mei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Centre of Suzhou Nano Science and Technology, National United Engineering Laboratory of, Functionalized Environmental Adsorption Materials, Soochow University, Suzhou, 215123, P. R. China
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20
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Yao X, Zhao J, Jin Z, Jiang Z, Xu D, Wang F, Zhang X, Song H, Pan D, Chen Y, Wei R, Guo Z, Liu J, Naik N, Wang R, Wu L. Flower-like Hydroxyfluoride-Sensing Platform toward NO 2 Detection. ACS APPLIED MATERIALS & INTERFACES 2021; 13:26278-26287. [PMID: 34047540 DOI: 10.1021/acsami.1c02176] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We report for the first time using zinc hydroxyfluoride (ZnOHF) for efficient NO2 gas detection. The prepared ZnOHF had a unique flower-like architecture self-assembled by nanorods with a diameter of 150 nm and length of 2-3 μm. The sensing performance toward NO2 detection indicated that the prepared ZnOHF exhibited high response (82.71), short response/recovery time (13 s/35 s) to 10 ppm of NO2, and excellent selectivity at 200 °C, greatly outperforming the ZnO raw material. ZnOHF could work in a wide detection window ranging from 100 ppb to 50 ppm, implying its practical application prospects in both industry and daily life. The excellent sensing behavior of ZnOHF originated mainly from the negligible oxygen ions adsorbed on the material surface, which was caused by the higher work function of ZnOHF. Therefore, almost all conduction band electrons can be used in the NO2 gas sensing.
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Affiliation(s)
- Xingyu Yao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education and School of Materials Science and Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Jinbo Zhao
- School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250353, China
| | - Zhidong Jin
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education and School of Materials Science and Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Zhen Jiang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education and School of Materials Science and Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Dongmei Xu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education and School of Materials Science and Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Fenglong Wang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education and School of Materials Science and Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Xiaomei Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Haixiang Song
- Henan Joint International Research Laboratory of Nanocomposite Sensing Materials, School of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang 455000, China
| | - Duo Pan
- Integrated Composites Laboratory (ICL), Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37966, United States
| | - Yunxia Chen
- School of Mechanical Engineering, Shanghai Dianji University, Shanghai 201306, China
| | - Renbo Wei
- School of Chemical Engineering, Northwest University, Xi'an 710069, China
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37966, United States
| | - Jiurong Liu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education and School of Materials Science and Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Nithesh Naik
- Department of Mechanical & Manufacturing Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Rutao Wang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education and School of Materials Science and Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Lili Wu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education and School of Materials Science and Engineering, Shandong University, Jinan, Shandong 250061, China
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21
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Xu Y, Xie J, Zhang Y, Tian F, Yang C, Zheng W, Liu X, Zhang J, Pinna N. Edge-enriched WS 2 nanosheets on carbon nanofibers boosts NO 2 detection at room temperature. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125120. [PMID: 33485227 DOI: 10.1016/j.jhazmat.2021.125120] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 12/23/2020] [Accepted: 01/10/2021] [Indexed: 05/26/2023]
Abstract
Two-dimensional (2D) transition metal dichalcogenides (TMDs) hold great promise for room temperature (RT) NO2 sensors. However, the exposure of the edges of TMDs with high adsorption capability and electronic activity remains a great obstacle to achieve high sensor sensitivity. Herein, we demonstrate a high-performance RT NO2 gas sensor based on WS2 nanosheets/carbon nanofibers (CNFs) composite with abundant intentionally exposed WS2 edges. Few-layer WS2 nanosheets are anchored on CNFs through a hydrothermal process. The approach permits to achieve a coating presenting an optimized active surface area and accessibility of the sensing layers. The exposure of WS2 edges remarkably improves the sensing properties. Consequently, the WS2@CNFs composite exhibits excellent selectivity to NO2 at RT with improved response and much lower detection limit in comparison to the WS2 and CNFs counterparts. Density functional theory (DFT) calculations verify a surprisingly strong NO2 adsorption on WS2 edge sites (adsorption energy 3.40 eV) with a partial charge transfer of 0.394e, while a week adsorption on the basal surface of WS2 (adsorption energy 0.25 eV) with a partial charge transfer of 0.171e. The strategy proposed herein will be instructive to the design of efficient material structures for low-power NO2 sensors with optimized performances.
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Affiliation(s)
- Yongshan Xu
- College of Physics, Center for Marine Observation and Communications, Qingdao University, Qingdao 266071, China
| | - Jiayue Xie
- College of Physics, Center for Marine Observation and Communications, Qingdao University, Qingdao 266071, China
| | - Yunfan Zhang
- State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - FengHui Tian
- State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China
| | - Chen Yang
- College of Physics, Center for Marine Observation and Communications, Qingdao University, Qingdao 266071, China
| | - Wei Zheng
- College of Physics, Center for Marine Observation and Communications, Qingdao University, Qingdao 266071, China
| | - Xianghong Liu
- College of Physics, Center for Marine Observation and Communications, Qingdao University, Qingdao 266071, China; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China.
| | - Jun Zhang
- College of Physics, Center for Marine Observation and Communications, Qingdao University, Qingdao 266071, China.
| | - Nicola Pinna
- Institut für Chemie and IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
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Wang Y, Zhou Y, Xie G, Li J, Wang Y, Liu X, Zang Z. Dual Resistance and Impedance Investigation: Ultrasensitive and Stable Humidity Detection of Molybdenum Disulfide Nanosheet-Polyethylene Oxide Hybrids. ACS APPLIED MATERIALS & INTERFACES 2021; 13:25250-25259. [PMID: 34014635 DOI: 10.1021/acsami.1c02119] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
There is an imperative demand for real-time relative humidity (RH) discrimination with excellent sensitivity and robust operation stability over a broad RH range at room temperature (22 °C). Of diverse two-dimensional (2D) materials, p-type molybdenum disulfide (MoS2) as a typical gas-sensing candidate has been rarely harnessed for humidity detection due to tiny response and undesirable stability induced by the conversion from electron to proton conduction with increasing RH. To overcome these issues, MoS2-polyethylene oxide (PEO) inorganic-organic nanocomposites as the sensing layer were facilely prepared in this work. The results showed that the composition-optimized composite film sensor surpassed the isolated MoS2 counterpart in terms of repeatability, response, hysteresis, stability, and selectivity. Both DC-resistance and AC-impedance analyses unveiled different roles of MoS2 and PEO components within composites. MoS2 strengthened the film structure, while hydrophilic PEO enlarged the water-adsorption capacity and thus improved the response and detection reliability via water-triggered ionic conductivity. This work afforded a feasible strategy via inorganic-organic combination to distinguish trace RH and improved the operation stability of 2D material-based sensors, simultaneously demonstrating realistic monitoring applications of exhaled gas detection and distance variation of moisture-emitting objects.
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Affiliation(s)
- Yanjie Wang
- Key Laboratory of Optoelectronic Technology and System of Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Yong Zhou
- Key Laboratory of Optoelectronic Technology and System of Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Guangzhong Xie
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, China
| | - Jing Li
- Key Laboratory of Optoelectronic Technology and System of Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Yuhang Wang
- Key Laboratory of Optoelectronic Technology and System of Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Xiaoyu Liu
- Chongqing University Cancer Hospital, Chongqing University, Chongqing 400030, China
| | - Zhigang Zang
- Key Laboratory of Optoelectronic Technology and System of Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
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Recent Progress of Toxic Gas Sensors Based on 3D Graphene Frameworks. SENSORS 2021; 21:s21103386. [PMID: 34067948 PMCID: PMC8152072 DOI: 10.3390/s21103386] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/08/2021] [Accepted: 05/08/2021] [Indexed: 01/02/2023]
Abstract
Air pollution is becoming an increasingly important global issue. Toxic gases such as ammonia, nitrogen dioxide, and volatile organic compounds (VOCs) like phenol are very common air pollutants. To date, various sensing methods have been proposed to detect these toxic gases. Researchers are trying their best to build sensors with the lowest detection limit, the highest sensitivity, and the best selectivity. As a 2D material, graphene is very sensitive to many gases and so can be used for gas sensors. Recent studies have shown that graphene with a 3D structure can increase the gas sensitivity of the sensors. The limit of detection (LOD) of the sensors can be upgraded from ppm level to several ppb level. In this review, the recent progress of the gas sensors based on 3D graphene frameworks in the detection of harmful gases is summarized and discussed.
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Tabata H, Matsuyama H, Goto T, Kubo O, Katayama M. Visible-Light-Activated Response Originating from Carrier-Mobility Modulation of NO 2 Gas Sensors Based on MoS 2 Monolayers. ACS NANO 2021; 15:2542-2553. [PMID: 33528994 DOI: 10.1021/acsnano.0c06996] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Some gas sensors exhibit significant increases in their sensitivity and response/recovery rates under light illumination. This photoactivation of the gas response is considered a promising alternative to conventional thermal activation, which requires high power consumption. Thin layers of molybdenum disulfide (MoS2) are known to exhibit an effective photoactivated gas response under visible light. However, the mechanism of the photoactivated response has not yet been studied in detail. In this study, we fabricated field-effect-transistor (FET) gas sensors based on MoS2 monolayers and investigated their photoactivated gas responses to NO2 gas under illumination at various irradiances of visible light. A photocurrent was generated mainly due to the photovoltaic effect, which decreased upon exposure to NO2. The conductance-based sensor response showed a dependence on NO2 concentration according to the Langmuir adsorption isotherm, thereby suggesting that the response is proportional to the surface coverage of NO2 molecules on the MoS2 layer. The response and recovery rates showed a linear increase with increasing irradiance. Analysis based on the Langmuir adsorption model revealed that both photostimulated adsorption and desorption are involved in the photoactivated response. In contrast, despite the strong dependence of the photocurrent on the irradiance, the magnitude of the sensor response was independent of the irradiance. Based on this result and the change in transfer characteristics of the FET during NO2 exposure, we concluded that the fast response/recovery of the photoactivated response is due to the carrier mobility modulation of MoS2, which is caused by the dipole scattering of adsorbed NO2 molecules.
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Affiliation(s)
- Hiroshi Tabata
- Division of Electrical, Electronic and Infocommunications Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hiroaki Matsuyama
- Division of Electrical, Electronic and Infocommunications Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Taishi Goto
- Division of Electrical, Electronic and Infocommunications Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Osamu Kubo
- Division of Electrical, Electronic and Infocommunications Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Mitsuhiro Katayama
- Division of Electrical, Electronic and Infocommunications Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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Perumal S, Moon IS. Sustainable NO removal and its sensitive monitoring at room temperature by electrogenerated Ni (I) electron mediator. CHEMOSPHERE 2021; 265:129122. [PMID: 33280846 DOI: 10.1016/j.chemosphere.2020.129122] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/19/2020] [Accepted: 11/23/2020] [Indexed: 06/12/2023]
Abstract
Online monitoring of gas pollutants in the gas phase at room temperature using an electrochemical macro gas flow sensor is challenging and important for the pollutant treatment process. In this work, for the first time, we tried to explore the homogeneous and heterogeneous application of Ni(II) (CN)42- in the KOH environment for the removal and monitoring of toxic nitric oxide gas. The homogeneous electrogenerated Ni(I) (CN)43- was effectively removing the toxic nitric oxide gas by electro scrubbing method and the novel Ni(II) (CN)42- and KOH modified electrode used for heterogeneous sensor application with high sensitivity, and reliability toward Nitric oxide gas. The sensor showed enhanced gas diffusion and high sensitivity. Scanning electron microscopy and X-ray diffraction confirmed the modification of the carbon felt electrode. In a high concentrated KOH environment, the active mediator stabilized the sensor for a long time compared to the neutral environment. The Ni(II) (CN)42- fabricated carbon felt was used to monitor the concentration of nitric oxide gas pollutant; the calculated sensitivity was approximately -0.33 mA ppm-1 cm-2. The current increased linearly with increasing nitric oxide concentration up to 12 ppm and was validated by online gas chromatography. The developed electrochemical gas flow sensor successfully monitored the unremoved nitric oxide gas at the exit from the MER electro-scrubbing process; the concentration was calculated using a calibration plot.
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Affiliation(s)
- Silambarasan Perumal
- Department of Chemical Engineering, Sunchon National University, 255-Jungang Ro, Suncheon-si, Jeollanam-do, 57922, South Korea
| | - Il Shik Moon
- Department of Chemical Engineering, Sunchon National University, 255-Jungang Ro, Suncheon-si, Jeollanam-do, 57922, South Korea.
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Agrawal AV, Kumar N, Kumar M. Strategy and Future Prospects to Develop Room-Temperature-Recoverable NO 2 Gas Sensor Based on Two-Dimensional Molybdenum Disulfide. NANO-MICRO LETTERS 2021; 13:38. [PMID: 33425474 PMCID: PMC7780921 DOI: 10.1007/s40820-020-00558-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 10/29/2020] [Indexed: 05/12/2023]
Abstract
Nitrogen dioxide (NO2), a hazardous gas with acidic nature, is continuously being liberated in the atmosphere due to human activity. The NO2 sensors based on traditional materials have limitations of high-temperature requirements, slow recovery, and performance degradation under harsh environmental conditions. These limitations of traditional materials are forcing the scientific community to discover future alternative NO2 sensitive materials. Molybdenum disulfide (MoS2) has emerged as a potential candidate for developing next-generation NO2 gas sensors. MoS2 has a large surface area for NO2 molecules adsorption with controllable morphologies, facile integration with other materials and compatibility with internet of things (IoT) devices. The aim of this review is to provide a detailed overview of the fabrication of MoS2 chemiresistance sensors in terms of devices (resistor and transistor), layer thickness, morphology control, defect tailoring, heterostructure, metal nanoparticle doping, and through light illumination. Moreover, the experimental and theoretical aspects used in designing MoS2-based NO2 sensors are also discussed extensively. Finally, the review concludes the challenges and future perspectives to further enhance the gas-sensing performance of MoS2. Understanding and addressing these issues are expected to yield the development of highly reliable and industry standard chemiresistance NO2 gas sensors for environmental monitoring.
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Affiliation(s)
- Abhay V. Agrawal
- Functional and Renewable Energy Materials Laboratory, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001 India
| | - Naveen Kumar
- Functional and Renewable Energy Materials Laboratory, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001 India
| | - Mukesh Kumar
- Functional and Renewable Energy Materials Laboratory, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001 India
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Islam MA, Li H, Moon S, Han SS, Chung HS, Ma J, Yoo C, Ko TJ, Oh KH, Jung Y, Jung Y. Vertically Aligned 2D MoS 2 Layers with Strain-Engineered Serpentine Patterns for High-Performance Stretchable Gas Sensors: Experimental and Theoretical Demonstration. ACS APPLIED MATERIALS & INTERFACES 2020; 12:53174-53183. [PMID: 33180481 DOI: 10.1021/acsami.0c17540] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Two-dimensional (2D) molybdenum disulfide (MoS2) with vertically aligned (VA) layers exhibits significantly enriched surface-exposed edge sites with an abundance of dangling bonds owing to its intrinsic crystallographic anisotropy. Such structural variation renders the material with exceptionally high chemical reactivity and chemisorption ability, making it particularly attractive for high-performance electrochemical sensing. This superior property can be further promoted as far as it is integrated on mechanically stretchable substrates well retaining its surface-exposed defective edges, projecting opportunities for a wide range of applications utilizing its structural uniqueness and mechanical flexibility. In this work, we explored VA-2D MoS2 layers configured in laterally stretchable forms for multifunctional nitrogen dioxide (NO2) gas sensors. Large-area (>cm2) VA-2D MoS2 layers grown by a chemical vapor deposition (CVD) method were directly integrated onto a variety of flexible substrates with serpentine patterns judiciously designed to accommodate a large degree of tensile strain. These uniquely structured VA-2D MoS2 layers were demonstrated to be highly sensitive to NO2 gas of controlled concentration preserving their intrinsic structural and chemical integrity, e.g., significant current response ratios of ∼160-380% upon the introduction of NO2 at a level of 5-30 ppm. Remarkably, they exhibited such a high sensitivity even under lateral stretching up to 40% strain, significantly outperforming previously reported 2D MoS2 layer-based NO2 gas sensors of any structural forms. Underlying principles for the experimentally observed superiority were theoretically unveiled by density functional theory (DFT) calculation and finite element method (FEM) analysis. The intrinsic high sensitivity and large stretchability of VA-2D MoS2 layers confirmed in this study are believed to be applicable in sensing diverse gas species, greatly broadening their versatility in stretchable and wearable technologies.
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Affiliation(s)
- Md Ashraful Islam
- Department of Electrical and Computer Engineering, University of Central Florida, Orlando, Florida 32816, United States
- NanoScience Technology Center, University of Central Florida, Orlando, Florida 32826, United States
| | - Hao Li
- Department of Materials Science and Engineering, University of Central Florida, Orlando, Florida 32826, United States
| | - Seokjin Moon
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Sang Sub Han
- NanoScience Technology Center, University of Central Florida, Orlando, Florida 32826, United States
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, South Korea
| | - Hee-Suk Chung
- Analytical Research Division, Korea Basic Science Institute, Jeonju 54907, South Korea
| | - Jinwoo Ma
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Changhyeon Yoo
- NanoScience Technology Center, University of Central Florida, Orlando, Florida 32826, United States
| | - Tae-Jun Ko
- NanoScience Technology Center, University of Central Florida, Orlando, Florida 32826, United States
| | - Kyu Hwan Oh
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, South Korea
| | - YounJoon Jung
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Yeonwoong Jung
- Department of Electrical and Computer Engineering, University of Central Florida, Orlando, Florida 32816, United States
- NanoScience Technology Center, University of Central Florida, Orlando, Florida 32826, United States
- Department of Materials Science and Engineering, University of Central Florida, Orlando, Florida 32826, United States
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29
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Tang SY, Yang CC, Su TY, Yang TY, Wu SC, Hsu YC, Chen YZ, Lin TN, Shen JL, Lin HN, Chiu PW, Kuo HC, Chueh YL. Design of Core-Shell Quantum Dots-3D WS 2 Nanowall Hybrid Nanostructures with High-Performance Bifunctional Sensing Applications. ACS NANO 2020; 14:12668-12678. [PMID: 32813498 DOI: 10.1021/acsnano.0c01264] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Transition metal dichalcogenides (TMDCs) have recently attracted a tremendous amount of attention owing to their superior optical and electrical properties as well as the interesting and various nanostructures that are created by different synthesis processes. However, the atomic thickness of TMDCs limits the light absorption and results in the weak performance of optoelectronic devices, such as photodetectors. Here, we demonstrate the approach to increase the surface area of TMDCs by a one-step synthesis process of TMDC nanowalls from WOx into three-dimensional (3D) WS2 nanowalls. By utilizing a rapid heating and rapid cooling process, the formation of 3D nanowalls with a height of approximately 150 nm standing perpendicularly on top of the substrate can be achieved. The combination of core-shell colloidal quantum dots (QDs) with three different emission wavelengths and 3D WS2 nanowalls further improves the performance of WS2-based photodetector devices, including a photocurrent enhancement of 320-470% and shorter response time. The significant results of the core-shell QD-WS2 hybrid devices can be contributed by the high nonradiative energy transfer efficiency between core-shell QDs and the nanostructured material, which is caused by the spectral overlap between the emission of core-shell QDs and the absorption of WS2. Besides, outstanding NO2 gas-sensing performance of core-shell QDs/WS2 devices can be achieved with an extremely low detection limit of 50 ppb and a fast response time of 26.8 s because of local p-n junctions generated by p-type 3D WS2 nanowalls and n-type core-shell CdSe-ZnS QDs. Our work successfully reveals the energy transfer phenomenon in core-shell QD-WS2 hybrid devices and shows great potential in commercial multifunctional sensing applications.
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Affiliation(s)
- Shin-Yi Tang
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chun-Chuan Yang
- Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Teng-Yu Su
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Tzu-Yi Yang
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Shu-Chi Wu
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Chieh Hsu
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Ze Chen
- Department of Material Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Tzu-Neng Lin
- Department of Physics and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li 32023, Taiwan
| | - Ji-Lin Shen
- Department of Physics and Center for Nanotechnology, Chung Yuan Christian University, Chung-Li 32023, Taiwan
| | - Heh-Nan Lin
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Po-Wen Chiu
- Department of Electrical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Hao-Chung Kuo
- Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Yu-Lun Chueh
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
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30
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Yang F, Wang C, Guo Z. Integration of bubble phobicity, gas sensing and friction alleviation into a versatile MoS 2/SnO 2/CNF heterostructure by an impressive, simple and effective method. NANOSCALE 2020; 12:18629-18639. [PMID: 32909567 DOI: 10.1039/d0nr05378c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The engineering of composite surfaces and interfaces of materials at the micro/nano-hierarchical level with multiple functionalities is attracting increasing attention due to their biomimetic technological applications, especially the self-cleaning with gas bubbles, gas sensing and sustainable anti-friction performances. Herein, the ternary MoS2/SnO2/CNF (CNF: carbon nanofiber) was designed and assembled by an in situ facile method. Interestingly, its microstructure exhibits a necklace-like morphology. The MoS2/SnO2/CNF shows desirable bubble phobicity under water and in a PAO4 environment on various substrates, an acceptable gas-sensing ability to target gas with a detection limit of 5 ppm and fascinating tribological performances for additives in different kinds of base/lubricating oils. These results demonstrate that the necklace-like ternary MoS2/SnO2/CNF structure could have numerous applications in one system and may provide a new perspective in composite surface and interface materials engineering.
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Affiliation(s)
- Fuchao Yang
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering and Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, People's Republic of China.
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31
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Liu L, Ikram M, Ma L, Zhang X, Lv H, Ullah M, Khan M, Yu H, Shi K. Edge-exposed MoS 2 nanospheres assembled with SnS 2 nanosheet to boost NO 2 gas sensing at room temperature. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122325. [PMID: 32126422 DOI: 10.1016/j.jhazmat.2020.122325] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/01/2020] [Accepted: 02/15/2020] [Indexed: 05/13/2023]
Abstract
SnS2 nanosheets (NSs) have become an ideal candidate for high performance gas sensors due to their unique sensing properties. However, the restacking and aggregation in the process of sensor manufacturing have great influence on the gas sensing performance. In this study, we synthesized a novel heterojunction of the flower-like porous SnS2 NSs with edge exposed MoS2 nanospheres via a facile hydrothermal method and sensitive response has achieved at room temperature (27℃). After functionalization, the SMS-Ⅱ showed excellent response (Ra/Rg = 25.9-100 ppm NO2), which is 22.3 times higher than that of the pristine SnS2 NSs. The sensor also has the characteristics of short response time of 2 s, excellent base line recovery (28.2 s), long-term stability and reliability within 16 weeks, good selectivity and low detection concentration of only 50 ppb. The p-n heterojunction formed between the edge-exposed spherical MoS2 and the 3D flower-like SnS2 NSs has a synergistic effect, providing a highly active sites for the adsorption of NO2 gas, which greatly enhance the sensitivity of the sensor. Simple fabrication and excellent gas sensing performance of the SnS2/MoS2 heterostructure nanomaterials (NMs) will highly effective for commercial gas sensing application.
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Affiliation(s)
- Lujia Liu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China
| | - Muhammad Ikram
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China
| | - Laifeng Ma
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China
| | - Xueyi Zhang
- College of Food Science, Northeast Agricultural University, Harbin, 150030, PR China
| | - He Lv
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China
| | - Mohib Ullah
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China
| | - Mawaz Khan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China
| | - Haitao Yu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China.
| | - Keying Shi
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China.
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32
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Lee D, Jang AR, Kim JY, Lee G, Jung DW, Lee TI, Lee JO, Kim JJ. Phase-dependent gas sensitivity of MoS 2 chemical sensors investigated with phase-locked MoS 2. NANOTECHNOLOGY 2020; 31:225504. [PMID: 32069439 DOI: 10.1088/1361-6528/ab776b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In the present study, phase-dependent gas sensitivities of MoS2 chemical sensors were examined. While 1T-phase MoS2 (1T-MoS2) has shown better chemical sensitivity than has 2H-phase MoS2 (2H-MoS2), the instability of the 1T phase has been hindering applications of 1T-MoS2 as chemical sensors. Here, the chemical sensitivity of MoS2 locked in its 1T phase by using a ZnO phase lock was investigated. To develop MoS2 chemical sensors locked in the 1T phase, we synthesized a multi-dimensional nanomaterial by growing ZnO nanorods onto MoS2 nanosheets (ZnO@1T-MoS2). Raman spectroscopy and x-ray photoelectron spectroscopy analyses of such phase-locked 1T-MoS2 subjected to flash light irradiation 100 times confirmed its robustness. ZnO nanomaterials hybridized on MoS2 nanosheets not only froze the MoS2 at its 1T phase, but also increased the active surface area for chemical sensing. The resulting hybridized material showed better response, namely better sensitivity, to NO2 gas exposure at room temperature than did 1T-MoS2 and 2H-MoS2. This result indicated that increased surface area and heterojunction formation between MoS2 and ZnO constitute a more promising route for improving sensitivity than using the 1T phase itself.
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Affiliation(s)
- Doeun Lee
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), Gajeong-ro 141, Daejeon 34114, Republic of Korea. Department of Physics, Jeonbuk National University, Jeonju 54896, Republic of Korea
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Yin J, Jin J, Lin H, Yin Z, Li J, Lu M, Guo L, Xi P, Tang Y, Yan C. Optimized Metal Chalcogenides for Boosting Water Splitting. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1903070. [PMID: 32440471 PMCID: PMC7237848 DOI: 10.1002/advs.201903070] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 01/16/2020] [Indexed: 05/28/2023]
Abstract
Electrocatalytic water splitting (2H2O → 2H2 + O2) is a very promising avenue to effectively and environmentally friendly produce highly pure hydrogen (H2) and oxygen (O2) at a large scale. Different materials have been developed to enhance the efficiency for water splitting. Among them, chalcogenides with unique atomic arrangement and high electronic transport show interesting catalytic properties in various electrochemical reactions, such as the hydrogen evolution reaction, oxygen evolution reaction, and overall water splitting, while the control of their morphology and structure is of vital importance to their catalytic performance. Herein, the general synthetic methods are summarized to prepare metal chalcogenides and different strategies are designed to improve their catalytic performance for water splitting. The remaining challenges in the research and development of metal chalcogenides and possible directions for future research are also summarized.
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Affiliation(s)
- Jie Yin
- State Key Laboratory of Applied Organic ChemistryKey Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000China
- Department of ChemistryBrown UniversityProvidenceRI02912USA
| | - Jing Jin
- State Key Laboratory of Applied Organic ChemistryKey Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000China
| | - Honghong Lin
- Department of ChemistryBrown UniversityProvidenceRI02912USA
| | - Zhouyang Yin
- Department of ChemistryBrown UniversityProvidenceRI02912USA
| | - Jianyi Li
- State Key Laboratory of Applied Organic ChemistryKey Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000China
| | - Min Lu
- State Key Laboratory of Applied Organic ChemistryKey Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000China
| | - Linchuan Guo
- State Key Laboratory of Applied Organic ChemistryKey Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000China
| | - Pinxian Xi
- State Key Laboratory of Applied Organic ChemistryKey Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000China
| | - Yu Tang
- State Key Laboratory of Applied Organic ChemistryKey Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000China
| | - Chun‐Hua Yan
- State Key Laboratory of Applied Organic ChemistryKey Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000China
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Khan MAH, Thomson B, Debnath R, Rani A, Motayed A, Rao MV. Reliable anatase-titania nanoclusters functionalized GaN sensor devices for UV assisted NO 2 gas-sensing in ppb level. NANOTECHNOLOGY 2020; 31:155504. [PMID: 31891921 DOI: 10.1088/1361-6528/ab6685] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Internet of Things applications require ultra-low power, integrable into electronic circuits and mini-sized chemical sensors for automated remote air quality monitoring system. In this work, a highly sensitive and selective detection of nitrogen dioxide (NO2) has been demonstrated by functionalizing gallium nitride (GaN) submicron wire with titania (TiO2) nanoclusters. The two-terminal GaN/TiO2 sensor device was fabricated by top-down approach. The photo-enabled sensing makes it possible to operate this sensor at room-temperature, resulting in a significant reduction in operating power. The GaN/TiO2 sensor was able to detect NO2 concentrations as low as 10 ppb in air at room temperature (20 °C) with a quick response-recovery process. The sensor was found highly selective toward NO2 against other interfering gases, such as ethanol (C2H5OH), ammonia (NH3), sulfur dioxide (SO2), methane (CH4) and carbon dioxide (CO2). Furthermore, principal component analysis has been performed to address the cross-sensitive nature of TiO2. The sensor device exhibited excellent long-term stability at room temperature and humidity and was quite stable and reliable at various environmental conditions. Continuous exposure of the device to siloxane for a one-month period has shown a very small degradation in sensor response to NO2. Finally, interaction of NO2 gas molecules with the GaN/TiO2 sensor has been modeled and explained under the light of energy band diagram. The photoinduced oxygen desorption and subsequent charge transfer between TiO2 nanoclusters and NO2 molecules modulate the depletion region width within the GaN, thus contributing to a high performance NO2 gas sensing.
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Affiliation(s)
- Md Ashfaque Hossain Khan
- Department of Electrical and Computer Engineering, George Mason University, Fairfax, VA 22030, United States of America
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Wang JC, Shi W, Sun XQ, Wu FY, Li Y, Hou Y. Enhanced Photo-Assisted Acetone Gas Sensor and Efficient Photocatalytic Degradation Using Fe-Doped Hexagonal and Monoclinic WO 3 Phase-Junction. NANOMATERIALS 2020; 10:nano10020398. [PMID: 32102397 PMCID: PMC7075328 DOI: 10.3390/nano10020398] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 02/16/2020] [Accepted: 02/21/2020] [Indexed: 12/19/2022]
Abstract
The development of WO3-based gas sensors for analysis of acetone in exhaled breath is significant for noninvasive diagnosis of diabetes. A series of Fe-doped hexagonal and monoclinic WO3 phase−junction (Fe−h/m−WO3) sensors were synthesized by the hydrothermal calcination method, and the influences of operating temperature and light irradiation on the response were studied. Under light emitting diode (LED) illumination, Fe−h/m−WO3 exhibited higher responses to acetone than those of the undoped WO3-based sensors at an operating temperature of 260 °C with 90% relative humidity, and good linearity between response and acetone concentration (0.5 to 2.5 ppm) was achieved under the 90% relative humidity condition. Meanwhile, the optimal Fe−h/m−WO3 sensor exhibited high selectivity and stability for a duration of three months. The excellent sensing performance of Fe−h/m−WO3 was attributed to the formation of phase−junction and Fe doping, and these were beneficial for the separation of photon−generated carriers and oxygen adsorption on the WO3 surface, promoting the generation of superoxide radicals, which was demonstrated by electron paramagnetic resonance and photocurrent tests. Additionally, the Fe−doped WO3 phase−junction sample also showed good photocatalytic performance for rhodamine B degradation. This study may provide some insights into rational design of new types of gas sensors and offer an alternative for noninvasive diagnosis of diabetes.
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Affiliation(s)
- Ji-Chao Wang
- College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453000, China; (J.-C.W.); (X.-Q.S.); (F.-Y.W.)
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, China
| | - Weina Shi
- College of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453000, China
- Correspondence: (W.S.); (Y.H.); Tel.: +86-0373-304-0933 (Y.H.)
| | - Xue-Qin Sun
- College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453000, China; (J.-C.W.); (X.-Q.S.); (F.-Y.W.)
| | - Fang-Yan Wu
- College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453000, China; (J.-C.W.); (X.-Q.S.); (F.-Y.W.)
| | - Yu Li
- College of Chemical Engineering and Materials, Zhengzhou University of Light Industry, Zhengzhou 450000, China;
| | - Yuxia Hou
- College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453000, China; (J.-C.W.); (X.-Q.S.); (F.-Y.W.)
- Correspondence: (W.S.); (Y.H.); Tel.: +86-0373-304-0933 (Y.H.)
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36
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Liu J, Hu Z, Zhang Y, Li HY, Gao N, Tian Z, Zhou L, Zhang B, Tang J, Zhang J, Yi F, Liu H. MoS 2 Nanosheets Sensitized with Quantum Dots for Room-Temperature Gas Sensors. NANO-MICRO LETTERS 2020; 12:59. [PMID: 34138314 PMCID: PMC7770826 DOI: 10.1007/s40820-020-0394-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 01/23/2020] [Indexed: 05/05/2023]
Abstract
The Internet of things for environment monitoring requires high performance with low power-consumption gas sensors which could be easily integrated into large-scale sensor network. While semiconductor gas sensors have many advantages such as excellent sensitivity and low cost, their application is limited by their high operating temperature. Two-dimensional (2D) layered materials, typically molybdenum disulfide (MoS2) nanosheets, are emerging as promising gas-sensing materials candidates owing to their abundant edge sites and high in-plane carrier mobility. This work aims to overcome the sluggish and weak response as well as incomplete recovery of MoS2 gas sensors at room temperature by sensitizing MoS2 nanosheets with PbS quantum dots (QDs). The huge amount of surface dangling bonds of QDs enables them to be ideal receptors for gas molecules. The sensitized MoS2 gas sensor exhibited fast and recoverable response when operated at room temperature, and the limit of NO2 detection was estimated to be 94 ppb. The strategy of sensitizing 2D nanosheets with sensitive QD receptors may enhance receptor and transducer functions as well as the utility factor that determine the sensor performance, offering a powerful new degree of freedom to the surface and interface engineering of semiconductor gas sensors.
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Affiliation(s)
- Jingyao Liu
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, People's Republic of China
| | - Zhixiang Hu
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, People's Republic of China
| | - Yuzhu Zhang
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, People's Republic of China
| | - Hua-Yao Li
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, People's Republic of China
| | - Naibo Gao
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, People's Republic of China
| | - Zhilai Tian
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, People's Republic of China
| | - Licheng Zhou
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, People's Republic of China
| | - Baohui Zhang
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, People's Republic of China
| | - Jiang Tang
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, People's Republic of China
| | - Jianbing Zhang
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, People's Republic of China
| | - Fei Yi
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, People's Republic of China
| | - Huan Liu
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, People's Republic of China.
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Zhu P, Li S, Zhao C, Zhang Y, Yu J. 3D synergistical rGO/Eu(TPyP)(Pc) hybrid aerogel for high-performance NO 2 gas sensor with enhanced immunity to humidity. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121426. [PMID: 31635817 DOI: 10.1016/j.jhazmat.2019.121426] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 09/16/2019] [Accepted: 10/07/2019] [Indexed: 06/10/2023]
Abstract
The prevalence of Internet of Things and portable electronics create an unprecedented demand for the high performance gas sensors. To pursuit such sensor, sandwich-type (phthalocyaninato)(porphyrinato) europium double-decker complex Eu(TPyP)(Pc) [TPyP = meso-tetra(4-pyridyl)porphyrin; Pc = phthalocyanine] was in situ self-assembled on the surface of reduced graphene oxide (rGO) driven by the π-π interaction, forming a 3D synergistical rGO/Eu(TPyP)(Pc) hybrid aerogel. The resulting aerogel not only effectively integrates the gas sensing of Eu(TPyP)(Pc) and good conductivity of rGO, but also exhibited a prominent synergy effect. Ascribed to the attractive properties, the fabricated NO2 gas sensor exhibits superior sensitivity and selectivity in the range of 0.5 to 100 ppm with an extremely low theoretical limit level of detection (80 ppb) at ambient temperature. The response and recovery time of rGO/Eu(TPyP)(Pc) hybrid aerogel based sensor to20 ppm NO2 were 172 and 828 s, respectively. Remarkably, the hydrophobic porous structure of rGO/Eu(TPyP)(Pc) hybrid aerogel endows the prepared sensor with excellent immunity to high relative humidity, which conquered the key technical issue of real application. The present sensor, simultaneously featured with high performance, low-power consumption, and good tolerance to environmental variations, is anticipated to offer the "on-site" and "on-line" measurement tool in real samples.
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Affiliation(s)
- Peihua Zhu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China
| | - Shanshan Li
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China
| | - Chuanrui Zhao
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China
| | - Yan Zhang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China; Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Jinan, 250022, China.
| | - Jinghua Yu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China
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Yang K, Yuan W, Hua Z, Tang Y, Yin F, Xia D. Triazine-Based Two-Dimensional Organic Polymer for Selective NO 2 Sensing with Excellent Performance. ACS APPLIED MATERIALS & INTERFACES 2020; 12:3919-3927. [PMID: 31891479 DOI: 10.1021/acsami.9b17450] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Gas sensors with high sensitivity, fast response/recovery, good selectivity, and room-temperature operation are highly desirable for practical use. However, most of the existing gas sensing materials, either conventional metal oxide semiconductors or advanced inorganic two-dimensional (2D) polymers, can hardly satisfy the above requirements. Herein, we demonstrate an organic 2D polymer derived from a covalent triazine framework (CTF), which possesses nanoscale thickness, intrinsic and periodic pore structures, and abundant functional groups with excellent gas sensing performance. The as-prepared triazine-based 2D polymer (T-2DP) exhibits selective recognition to NO2 with an ultrahigh sensitivity of 452.6 ppm-1, which outperforms most other 2D nanomaterials and its CTF matrix. The sensing effect is superfast (35-47 s) and fully reversible operated at room temperature. The superior comprehensive gas sensing performance of T-2DP and the underlying mechanism was experimentally studied and further discussed by comparison with that of CTF and widely investigated inorganic 2D polymers including graphene and MXene. As a proof of concept, a flexible NO2 chemiresistor based on T-2DP was fabricated to demonstrate its potential for integration into wearable electronics. The scientific findings in this work may propose a new route for the design of high-performance gas sensing materials on the basis of organic 2D polymers in next-generation wearable electronic devices.
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Affiliation(s)
| | | | - Zhongqiu Hua
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering , Hebei University of Technology , Tianjin 300401 , China
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Yadav S, Chaudhary P, Uttam KN, Varma A, Vashistha M, Yadav BC. Facile synthesis of molybdenum disulfide (MoS 2) quantum dots and its application in humidity sensing. NANOTECHNOLOGY 2019; 30:295501. [PMID: 30939462 DOI: 10.1088/1361-6528/ab1569] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Molybdenum disulfide (MoS2) quantum dots (QDs) are successfully synthesized by facile synthesis using ultrasonication assisted liquid exfoliation technique. The high and low boiling point solvents: N-methyl-pyrrolidone (NMP) and ethanol-water solution have been used for synthesis of MoS2 QDs. Similar size distribution of MoS2 QDs synthesized in two different solvents have been observed from the transmission electron microscopy and average size of these QDs are ∼5 nm. The film of MoS2 QDs is used to fabricate humidity sensor. The large edge to volume ratio and high surface active sites of QDs enhanced the water adsorption even at low humidity environment (<37% RH). The humidity sensing analysis shows that sensing film of MoS2 QDs synthesized in ethanol-water has an average sensitivity of 2.78 MΩ/%RH with fast response time (11 s), good repeatability and high stability. In view of these results, the work is highly applicable to fabricate high performance MoS2 QDs humidity sensor.
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Affiliation(s)
- Sarita Yadav
- Physics Department, University of Allahabad, Prayagraj-211002, India
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40
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Li W, Zhang Y, Long X, Cao J, Xin X, Guan X, Peng J, Zheng X. Gas Sensors Based on Mechanically Exfoliated MoS 2 Nanosheets for Room-Temperature NO 2 Detection. SENSORS (BASEL, SWITZERLAND) 2019; 19:E2123. [PMID: 31071927 PMCID: PMC6539376 DOI: 10.3390/s19092123] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 04/30/2019] [Accepted: 05/06/2019] [Indexed: 11/28/2022]
Abstract
The unique properties of MoS2 nanosheets make them a promising candidate for high-performance room temperature gas detection. Herein, few-layer MoS2 nanosheets (FLMN) prepared via mechanical exfoliation are coated on a substrate with interdigital electrodes for room-temperature NO2 detection. Interestingly, compared with other NO2 gas sensors based on MoS2, FLMN gas sensors exhibit high responsivity for room-temperature NO2 detection, and NO2 is easily desorbed from the sensor surface with an ultrafast recovery behavior, with recovery times around 2 s. The high responsivity is related to the fact that the adsorbed NO2 can affect the electron states within the entire material, which is attributed to the very small thickness of the MoS2 nanosheets. First-principles calculations were carried out based on the density functional theory (DFT) to verify that the ultrafast recovery behavior arises from the weak van der Waals binding between NO2 and the MoS2 surface. Our work suggests that FLMN prepared via mechanical exfoliation have a great potential for fabricating high-performance NO2 gas sensors.
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Affiliation(s)
- Wenli Li
- School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, China.
| | - Yong Zhang
- School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, China.
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China.
| | - Xia Long
- School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, China.
| | - Juexian Cao
- School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, China.
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China.
| | - Xin Xin
- School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, China.
| | - Xiaoxiao Guan
- School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, China.
| | - Jinfeng Peng
- School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China.
| | - Xuejun Zheng
- School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China.
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Casals O, Markiewicz N, Fabrega C, Gràcia I, Cané C, Wasisto HS, Waag A, Prades JD. A Parts Per Billion (ppb) Sensor for NO 2 with Microwatt (μW) Power Requirements Based on Micro Light Plates. ACS Sens 2019; 4:822-826. [PMID: 30758185 DOI: 10.1021/acssensors.9b00150] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A film of gas sensitive ZnO nanoparticles has been coupled with a low-power micro light plate (μLP) to achieve a NO2-parts-per-billion conductometric gas sensor operating at room temperature. In this μLP configuration, an InGaN-based LED (emitting at 455 nm) is integrated at a few hundred nanometers distance from the sensor material, leading to sensor photoactivation with well controlled, uniform, and high irradiance conditions, and very low electrical power needs. The response curves to different NO2 concentrations as a function of the irradiance displayed a bell-like shape. Responses of 20% to 25 ppb of NO2 were already observed at irradiances of 5 mWatts·cm-2 (applying an electrical power as low as 30 μW). In the optimum illumination conditions (around 60 mWatts·cm-2, or 200 μW of electric power), responses of 94% to 25 ppb were achieved, corresponding to a lower detection limit of 1 ppb of NO2. Higher irradiance values worsened the sensor response in the parts-per-billion range of NO2 concentrations. The responses to other gases such as NH3, CO, and CH4 were much smaller, showing a certain selectivity toward NO2. The effects of humidity on the sensor response are also discussed.
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Affiliation(s)
- Olga Casals
- MIND-IN2UB, Department of Electronic and Biomedical Engineering, Universitat de Barcelona, E-08028 Barcelona, Spain
| | - Nicolai Markiewicz
- MIND-IN2UB, Department of Electronic and Biomedical Engineering, Universitat de Barcelona, E-08028 Barcelona, Spain
| | - Cristian Fabrega
- MIND-IN2UB, Department of Electronic and Biomedical Engineering, Universitat de Barcelona, E-08028 Barcelona, Spain
| | - Isabel Gràcia
- IMB-CNM (CSIC), Institut de Microelectrònica de Barcelona, Campus UAB, E-08193 Bellaterra, Spain
| | - Carles Cané
- IMB-CNM (CSIC), Institut de Microelectrònica de Barcelona, Campus UAB, E-08193 Bellaterra, Spain
| | | | | | - Joan Daniel Prades
- MIND-IN2UB, Department of Electronic and Biomedical Engineering, Universitat de Barcelona, E-08028 Barcelona, Spain
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Tong SW, Medina H, Liao W, Wu J, Wu W, Chai J, Yang M, Abutaha A, Wang S, Zhu C, Hippalgaonkar K, Chi D. Employing a Bifunctional Molybdate Precursor To Grow the Highly Crystalline MoS 2 for High-Performance Field-Effect Transistors. ACS APPLIED MATERIALS & INTERFACES 2019; 11:14239-14248. [PMID: 30920198 DOI: 10.1021/acsami.9b01444] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Growth of the large-sized and high-quality MoS2 single crystals for high-performance low-power electronic applications is an important step to pursue. Despite the significant improvement made in minimizing extrinsic MoS2 contact resistance based on interfacial engineering of the devices, the electron mobility of field-effect transistors (FETs) made of a synthetic monolayer MoS2 is yet far below the expected theoretical values, implying that the MoS2 crystal quality needs to be further improved. Here, we demonstrate the high-performance two-terminal MoS2 FETs with room-temperature electron mobility up to ∼90 cm2 V-1 s-1 based on the sulfurization growth of the bifunctional precursor, sodium molybdate dihydrate. This unique transition-metal precursor, serving as both the crystalline Mo source and seed promotor (sodium), could facilitate the lateral growth of the highly crystalline monolayer MoS2 crystals (edge length up to ∼260 μm). Substrate surface treatment with oxygen plasma prior to the deposition of the Mo precursor is fundamental to increase the wettability between the Mo source and the substrate, promoting the thinning and coalescence of the source clusters during the growth of large-sized MoS2 single crystals. The control of growth temperature is also an essential step to grow a strictly monolayer MoS2 crystal. A proof-of-concept for thermoelectric device integration utilizing monolayer MoS2 sheds light on its potential in low-voltage and self-powered electronics.
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Affiliation(s)
- Shi Wun Tong
- Institute of Materials Research and Engineering, Agency for Science Technology and Research , 2 Fusionopolis Way, #08-03 Innovis , 138634 , Singapore
| | - Henry Medina
- Institute of Materials Research and Engineering, Agency for Science Technology and Research , 2 Fusionopolis Way, #08-03 Innovis , 138634 , Singapore
| | - Wugang Liao
- College of Electronic Science and Technology , Shenzhen University , Shenzhen 518060 , China
- Department of Electrical and Computer Engineering , National University of Singapore , 4 Engineering Drive 3 , 117583 , Singapore
| | - Jing Wu
- Institute of Materials Research and Engineering, Agency for Science Technology and Research , 2 Fusionopolis Way, #08-03 Innovis , 138634 , Singapore
| | - Wenya Wu
- Institute of Materials Research and Engineering, Agency for Science Technology and Research , 2 Fusionopolis Way, #08-03 Innovis , 138634 , Singapore
| | - Jianwei Chai
- Institute of Materials Research and Engineering, Agency for Science Technology and Research , 2 Fusionopolis Way, #08-03 Innovis , 138634 , Singapore
| | - Ming Yang
- Institute of Materials Research and Engineering, Agency for Science Technology and Research , 2 Fusionopolis Way, #08-03 Innovis , 138634 , Singapore
| | - Anas Abutaha
- Institute of Materials Research and Engineering, Agency for Science Technology and Research , 2 Fusionopolis Way, #08-03 Innovis , 138634 , Singapore
| | - Shijie Wang
- Institute of Materials Research and Engineering, Agency for Science Technology and Research , 2 Fusionopolis Way, #08-03 Innovis , 138634 , Singapore
| | - Chunxiang Zhu
- Department of Electrical and Computer Engineering , National University of Singapore , 4 Engineering Drive 3 , 117583 , Singapore
| | - Kedar Hippalgaonkar
- Institute of Materials Research and Engineering, Agency for Science Technology and Research , 2 Fusionopolis Way, #08-03 Innovis , 138634 , Singapore
| | - Dongzhi Chi
- Institute of Materials Research and Engineering, Agency for Science Technology and Research , 2 Fusionopolis Way, #08-03 Innovis , 138634 , Singapore
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Xin X, Zhang Y, Guan X, Cao J, Li W, Long X, Tan X. Enhanced Performances of PbS Quantum-Dots-Modified MoS 2 Composite for NO 2 Detection at Room Temperature. ACS APPLIED MATERIALS & INTERFACES 2019; 11:9438-9447. [PMID: 30753054 DOI: 10.1021/acsami.8b20984] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The modification of the material surface by the second-phase particles enables the electron interaction on the Fermi level or the energy band between different materials, which can achieve the improvement of gas-sensing properties. Herein, a novel composite of PbS quantum-dots-modified MoS2 (MoS2/PbS) is synthesized by combination of hydrothermal method with chemical precipitation and fabricated into the gas sensor to investigate its enhanced gas-sensing properties caused by the modification of PbS quantum dots at room temperature. It is found that the responsivity of MoS2/PbS is obviously higher than that of pure MoS2 gas sensor throughout the whole test range, and MoS2/PbS gas sensor has better selectivity compared with pure MoS2 gas sensor at room temperature. The response of MoS2/PbS gas sensor is about 50 times higher than that of MoS2 gas sensor at 100 ppm NO2 concentration. The recovery behavior is greatly improved, and the resistance of MoS2/PbS gas sensor can return completely with almost no drift (the recovery ratio is more than 99%). The enhanced gas-sensing properties of MoS2/PbS, which are superior to those of pure MoS2, are ascribed to the large surface area of MoS2 combined with the high responsivity of PbS quantum dots for NO2. The formation of heterojunctions leads to the competitive adsorption of the target gases, which can prevent MoS2 from being oxidized, further improving the stability of gas sensor. Furthermore, to profoundly discuss the enhanced performances and the sensing mechanism, the molecular models of adsorption systems are constructed to calculate the adsorption energies and the diffusion characters of NO2 via density functional theory. We expect that our work can offer a useful guideline for enhancing the gas-sensing properties at room temperature.
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Khan MAH, Rao MV, Li Q. Recent Advances in Electrochemical Sensors for Detecting Toxic Gases: NO₂, SO₂ and H₂S. SENSORS (BASEL, SWITZERLAND) 2019; 19:E905. [PMID: 30795591 PMCID: PMC6413198 DOI: 10.3390/s19040905] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 02/11/2019] [Accepted: 02/14/2019] [Indexed: 01/04/2023]
Abstract
Toxic gases, such as NOx, SOx, H₂S and other S-containing gases, cause numerous harmful effects on human health even at very low gas concentrations. Reliable detection of various gases in low concentration is mandatory in the fields such as industrial plants, environmental monitoring, air quality assurance, automotive technologies and so on. In this paper, the recent advances in electrochemical sensors for toxic gas detections were reviewed and summarized with a focus on NO₂, SO₂ and H₂S gas sensors. The recent progress of the detection of each of these toxic gases was categorized by the highly explored sensing materials over the past few decades. The important sensing performance parameters like sensitivity/response, response and recovery times at certain gas concentration and operating temperature for different sensor materials and structures have been summarized and tabulated to provide a thorough performance comparison. A novel metric, sensitivity per ppm/response time ratio has been calculated for each sensor in order to compare the overall sensing performance on the same reference. It is found that hybrid materials-based sensors exhibit the highest average ratio for NO₂ gas sensing, whereas GaN and metal-oxide based sensors possess the highest ratio for SO₂ and H₂S gas sensing, respectively. Recently, significant research efforts have been made exploring new sensor materials, such as graphene and its derivatives, transition metal dichalcogenides (TMDs), GaN, metal-metal oxide nanostructures, solid electrolytes and organic materials to detect the above-mentioned toxic gases. In addition, the contemporary progress in SO₂ gas sensors based on zeolite and paper and H₂S gas sensors based on colorimetric and metal-organic framework (MOF) structures have also been reviewed. Finally, this work reviewed the recent first principle studies on the interaction between gas molecules and novel promising materials like arsenene, borophene, blue phosphorene, GeSe monolayer and germanene. The goal is to understand the surface interaction mechanism.
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Affiliation(s)
- Md Ashfaque Hossain Khan
- Department of Electrical and Computer Engineering, George Mason University, Fairfax, VA 22030, USA.
| | - Mulpuri V Rao
- Department of Electrical and Computer Engineering, George Mason University, Fairfax, VA 22030, USA.
| | - Qiliang Li
- Department of Electrical and Computer Engineering, George Mason University, Fairfax, VA 22030, USA.
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Yi SY, Song YG, Park JY, Suh JM, Kim GS, Shim YS, Yuk JM, Kim S, Jang HW, Ju BK, Kang CY. Morphological Evolution Induced through a Heterojunction of W-Decorated NiO Nanoigloos: Synergistic Effect on High-Performance Gas Sensors. ACS APPLIED MATERIALS & INTERFACES 2019; 11:7529-7538. [PMID: 30672291 DOI: 10.1021/acsami.8b18678] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Morphological evolution accompanying a surface roughening and preferred orientation is an effective way to realize a high-performance gas sensor because of its significant potential as a chemical catalyst through chemical potentials and atomic energy states. In this work, we investigated a heterojunction of double-side-W-decorated NiO nanoigloos fabricated through radio frequency sputtering and a soft-template method. Interestingly, a morphological evolution characterized by a pyramidal rough surface and the preferred orientation of the (111) plane was observed upon decorating the bare NiO nanoigloos with W. The underlying mechanism of the morphological evolution was precisely demonstrated based on the van der Drift competitive growth model originating from the oxygen transport and chemical strain in the lattice. The gas sensing properties of W-decorated NiO show an excellent NO2 response and selectivity when compared to other gases. In addition, high response stability was evaluated under interference gas and humidity conditions. The synergistic effects on the sensing performance were interpreted on the basis of the morphological evolution of W-decorated NiO nanoigloos.
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Affiliation(s)
- Seung Yeop Yi
- Center for Electronic Materials , Korea Institute of Science and Technology (KIST) , Seoul 02791 , Republic of Korea
| | - Young Geun Song
- Center for Electronic Materials , Korea Institute of Science and Technology (KIST) , Seoul 02791 , Republic of Korea
| | - Jae Yeol Park
- Department of Materials Science & Engineering , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Jun Min Suh
- Department of Materials Science and Engineering, Research Institute of Advanced Materials , Seoul National University , Seoul 08826 , Republic of Korea
| | - Gwang Su Kim
- Center for Electronic Materials , Korea Institute of Science and Technology (KIST) , Seoul 02791 , Republic of Korea
| | - Young-Seok Shim
- Department of Materials Science & Engineering , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Jong Min Yuk
- Department of Materials Science & Engineering , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Sangtae Kim
- Center for Electronic Materials , Korea Institute of Science and Technology (KIST) , Seoul 02791 , Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials , Seoul National University , Seoul 08826 , Republic of Korea
| | | | - Chong-Yun Kang
- Center for Electronic Materials , Korea Institute of Science and Technology (KIST) , Seoul 02791 , Republic of Korea
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Zhou J, Cheng XF, Gao BJ, Yu C, He JH, Xu QF, Li H, Li NJ, Chen DY, Lu JM. Detection of NO 2 Down to One ppb Using Ion-in-Conjugation-Inspired Polymer. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1803896. [PMID: 30537175 DOI: 10.1002/smll.201803896] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 11/01/2018] [Indexed: 06/09/2023]
Abstract
Nitrogen dioxide (NO2 ) emission has severe impact on human health and the ecological environment and effective monitoring of NO2 requires the detection limit (limit of detection) of several parts-per-billion (ppb). All organic semiconductor-based NO2 sensors fail to reach such a level. In this work, using an ion-in-conjugation inspired-polymer (poly(3,3'-diaminobenzidine-squarine, noted as PDBS) as the sensory material, NO2 can be detected as low as 1 ppb, which is the lowest among all reported organic NO2 sensors. In addition, the sensor has high sensitivity, good reversibility, and long-time stability with a period longer than 120 d. Theoretical calculations reveal that PDBS offers unreacted amine and zwitterionic groups, which can offer both the H-bonding and ion-dipole interaction to NO2 . The moderate binding energies (≈0.6 eV) offer high sensitivity, selectivity as well as good reversibility. The results demonstrate that the ion-in-conjugation can be employed to greatly improve sensitivity and selectivity in organic gas sensors by inducing both H-bonding and ion-dipole attraction.
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Affiliation(s)
- Jin Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Xue-Feng Cheng
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Bi-Jun Gao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Chuang Yu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Jing-Hui He
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Qing-Feng Xu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Hua Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Na-Jun Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Dong-Yun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Jian-Mei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
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Han Y, Huang D, Ma Y, He G, Hu J, Zhang J, Hu N, Su Y, Zhou Z, Zhang Y, Yang Z. Design of Hetero-Nanostructures on MoS 2 Nanosheets To Boost NO 2 Room-Temperature Sensing. ACS APPLIED MATERIALS & INTERFACES 2018; 10:22640-22649. [PMID: 29896961 DOI: 10.1021/acsami.8b05811] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Molybdenum disulfide (MoS2), as a promising gas-sensing material, has gained intense interest because of its large surface-to-volume ratio, air stability, and various active sites for functionalization. However, MoS2-based gas sensors still suffer from low sensitivity, slow response, and weak recovery at room temperature, especially for NO2. Fabrication of heterostructures may be an effective way to modulate the intrinsic electronic properties of MoS2 nanosheets (NSs), thereby achieving high sensitivity and excellent recovery properties. In this work, we design a novel p-n hetero-nanostructure on MoS2 NSs using interface engineering via a simple wet chemical method. After surface modification with zinc oxide nanoparticles (ZnO NPs), the MoS2/ZnO hetero-nanostructure is endowed with an excellent response (5 ppm nitrogen dioxide, 3050%), which is 11 times greater than that of pure MoS2 NSs. To the best of our knowledge, such a response value is much higher than the response values reported for MoS2 gas sensors. Moreover, the fabricated hetero-nanostructure also improves recoverability to more than 90%, which is rare for room-temperature gas sensors. Our optimal sensor also possesses the characteristics of an ultrafast response time of 40 s, a reliable long-term stability within 10 weeks, an excellent selectivity, and a low detection concentration of 50 ppb. The enhanced sensing performances of the MoS2/ZnO hetero-nanostructure can be ascribed to unique 2D/0D hetero-nanostructures, synergistic effects, and p-n heterojunctions between ZnO NPs and MoS2 NSs. Such achievements of MoS2/ZnO hetero-nanostructure sensors imply that it is possible to use this novel nanostructure in ultrasensitive sensor applications.
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Affiliation(s)
- Yutong Han
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Da Huang
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Yujie Ma
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Guili He
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Jun Hu
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Jing Zhang
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Nantao Hu
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Yanjie Su
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Zhihua Zhou
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Yafei Zhang
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
| | - Zhi Yang
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , People's Republic of China
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